Home / 1,729.96-2,387.54-1,031.40

Finding the Fourth Proportional to 1,729.96, 2,387.54 and 1,031.40

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Solution

The fourth proportional to 1,729.96, 2,387.54 and 1,031.40 is: 1,423.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.96 : 2,387.54 = 1,031.40 : x
  2. Step 2: Convert to fraction form
    1,729.96/2,387.54 = 1,031.40/x
  3. Step 3: Cross multiply
    1,729.96x = 2,387.54 × 1,031.40
  4. Step 4: Simplify right side
    1,729.96x = 2,462,508.76
  5. Step 5: Solve for x
    x = 2,462,508.76/1,729.96
  6. Step 6: Final answer
    x = 1,423.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.